I am collecting PerfMon counters on a SQL Server 2008 server (which is hosted on a VM), and I am getting different Page File % Usage values for _Total and C:\pagefile.sys. The C:\pagefile.sys values are consistently at zero, and the _Total values are consistently around 26. Other counters (Memory Grants Pending, Page Life Expectancy, Processor Queue Length, Available MBytes) all are showing values indicative of memory and cpu pressure, so I would think that there would be some indication of paging to disk (which the _Total pagefile usage value agrees with but the C:\pagefile.sys instance value does not).
Would anyone have insight into how I should evaluate these two Pagefile % Usage values to determine the actual pagefile usage on the server? Does the fact that the Server is a Virtual Machine have anything to do with why there are two values?